Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Em qual país está localizado o aeroporto internacional Nnamdi Azikiwe?
 ###Tabelas: CREATE TABLE births_and_deaths (births_and_deaths_id AUTO_INCREMENT PRIMARY KEY, Average population (x 1000) VARCHAR, Live births 1 VARCHAR, Deaths 1 VARCHAR, Natural change 1 VARCHAR, Crude birth rate (per 1000) INT, Crude death rate (per 1000) INT, Natural change (per 1000) INT) CREATE TABLE list_of_champions (list_of_champions_id AUTO_INCREMENT PRIMARY KEY, Year VARCHAR, Champion VARCHAR, Runner-Up VARCHAR, 3rd Place VARCHAR, Location VARCHAR) CREATE TABLE the_125_most_prominent_peaks (the_125_most_prominent_peaks_id AUTO_INCREMENT PRIMARY KEY, Peak VARCHAR, Location VARCHAR, Height (m) INT, Prominence (m) INT, Col (m) INT, Parent VARCHAR) CREATE TABLE the_statement (the_statement_id AUTO_INCREMENT PRIMARY KEY, Fund VARCHAR, Manager VARCHAR, Fund Period VARCHAR, Fund Return VARCHAR, Market return VARCHAR) CREATE TABLE 2010_statistics_at_least_1000000_passengers (2010_statistics_at_least_1000000_passengers_id AUTO_INCREMENT PRIMARY KEY, Country VARCHAR, Airport VARCHAR, City VARCHAR, 2010 INT, Change (10/09) VARCHAR)  
SELECT Country FROM 2010_statistics_at_least_1000000_passengers WHERE Airport = nnamdi azikiwe international airport